Gumming mechanism.



No. 801,563. PATENTED 00T.10, 1905. B. P. WATBRHOUSE.

GUMMING MEGHANISM.

APPLICATION FILED MAYZ, 1902.

2 SHEETS-SHEET 1,

PATENTED OCT. 10, 1905.

E. P. WATERHOUS'E. GUMMING MEGHANISM,

APPLIOATION FILED MM2, 1902.

2 SHEETS-SHEET 2.

miner-:ses:

UNTTED STATES PATENT OFFICE.

VIZRA P. VATERHOUSE, OF WORCESTER. M.'\SSACl-lUSEl `TS, ASSIGNOR OFONE-HALF TO VORCESTER ENVELOPE COMPANY, OF WORCESTER, MASSACHUSETTS, ACORPORATION OF MASSACHUSETTS. i

GUIVllVlING lVlECHANlSlVI.

Specication of Letters Patent.

Patented Oct. 10, 1905.

Original application filed March 20, 1901, Serial No. 51,966. Dividedand this application filed May 2, 1902. Serial No. 105,616.

To ft/.Z 11j/tom it 11mg/ (10H/067%.'

Be it known that I, EZRA P. VATERHoUsE, a citizen ofthe United States,residingatVorcester, in the county of Toreester and State ofMassachusetts, have invented certain new and useful Improvements inGrumming Mechanism, of which thefollowing is aspecification.

My invention relates to gumming mechanism or mechanism for gummingsurfaces, and

i0 more particularly to the mechanism in an envelop-machine whichsupplies gum to the rolls or gummers which pass back and forth under thepick-ups which engage and raise the envelop-blanks in the well-knownway. This application is a division of my application,

Serial No. 51,966, tiled March 20, 1901.

The object of my invention is to provide an improved gumming mechanismmore particularly adapted for use in connection with an envelop-machine;and my invention consists in certain novel features of construction ofmy improvements, as will be hereinafter fully described.

l have only shown in the drawings sufficient portions of a gummingmechanism adapted to be used in connection with au envelop-niachine toillustrate the nature of my improvements.

Referring to the drawings, Figure 1 is a plan view of the gummingmechanism embodying my improvements. Eig. 2 is a transverse sectiontaken at a point indicated by line Q 2, Fig. 1, looking in the directionof arrow f/f, same figure. Fig. 3 is a cross-sec- Fig. 4 is a section online 4 4, Eig. 1, looking in the direction of arrow t, same figure. Fig.5 is an end view of the gumming mechanism shown in Eig. 1 looking in thedirection of arrow (f, same figure, with a portion broken away; and Fig.6 is a plan view of the two gum-rolls detached.

' In the accompanying' drawings, 1 is a box or receptacle for holdingthe gum and which may be of the ordinary construction usually employedin envelop-machines. The box 1 has in this instance a central horizontaldivision-plate secured at its ends by screws 3 uponears or lugs 1 on theinner surface of the ends of the box 1 in the usual way, as shown inFigs. 1 and 2. The plate Z is' preferably curved upwardly at its frontedge.

tion through the two gum-rolls detached.

On the ends of the box 1 are bearings 4 for the journals 5/ and 5H ofthe gum-box roll 5, which extends in the front part of the box 1 and isrotated therein in the usual way. One of the journals 5H of the gum-boxroll 5 is extended and has fast thereon the bevel-gear 6, which mesheswith and is driven by a bevelgear (not shown) to communicate acontinuous motion to the gum-box roll 5. Also fast on the extendedjournal 5H of the gum-box roll 5 is a pinion T, which meshes with anddrives a g'ear 8, fast on a shaft 9, mounted in bearing 4. On the otherend of the shaft 9 is fast a pinion 11, which meshes with a pinion 12,mounted on a stud 13. The pinion 12 also meshes with a pinion 14, faston the journal 15" of the gum-regulating roll 15, which is mounted toturn in bearings on the ends of the box 1.

The gum-regulating roll 15 has preferably eccentric bearings 16 for itsjournals 15 and 15, as shown in Fig. 5, which bearings are supported andadapted to be partially rotated in boxes 17 on the ends of thegum-box 1. The boxes 1T have a slot or opening 17 therein, through whichextends the threaded end 18 of a thumb-screw 18. The inner end of thethreaded end 18 of the thumb-screw 18 is screwed into the eccentricbearing 16, as shown in Fig. 5. On the threaded portion 18' of thethumb-screw 18 is loosely mounted a collar 19, having projections 19'thereon, which collar is adapted to engage the outer edge of the box 17.

By means of the eccentric bearings 16 of the gum -regulating roll 15through the thumb-screw 18 to turn said bearings the gum-regulating roll15 may be moved away from the gum-box roll 5 to leave a free open spacebetween the rolls 5 and 15 for the rcmoving of the gum or for any otherpurpose and may then be moved in contact with the gum-box roll 5, andthe degree of contact or the amount of space between the rolls 15 and 5may also be regulated bymoving the eccen- IOO ings. Each end of therecessed portion of the roll 15 is preferably left circular and the fulldiameter of the roll.

I have found in practice that by means of the flat surface 15H on thegum-regulating roll 15 between` its ends small particles and foreignsubstances in the gum can and will readily pass between the rolls 15 and5 through the space formed by the flat surface 15lll (shown in sectionalview, Fig. 3) and back into the gum-box instead of onto the gummers (notshown) from their contact with the gum-box roll 5 in the usual way.

In order not to have the flat surface 15 of the gum-regulating roll 15come opposite or contiguous to the gum-box roll 5 just at the time thegummers engage the roll 5 and apply too much gum to the gummers, it isnecessary to time the revolution of the gumregulating roll 15, and thisis done by means of the arrangement and the size of the pinionsintermediate the large gear 6 and the gear 14 on the gum-regulating roll15. The size of the pinions and their position is such that the flatsurface 15"' on the gum-regulating roll 15 will pass by the gum-box roll5 just before the gummers (not shown) engage the gum-box roll 5.

The advantages of my improvements will be readily appreciated by thoseskilled in the art.

By the construction of the gum-regulating roll 15 with the fiat surfacethereon I provide for the passage between said roll and the gumboX rolland their return into the gum-box of any particles and foreignsubstances in the gum, and thus prevent their passing onto the gummers.I also provide for the position of the gum-regulating roll 15 relativeto the gum-box roll 5, close to it or farther from it, according to theamount of gum to be carried on the gum-box roll 5. I also provide, bymeans of the gearing' for driving the gum-regulating roll 15, the timingof the revolution of said roll relative to the revolution of the gum-boxroll 5, all as above described.

It will be understood that the details of construction of myimprovements may be varied, if desired.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A gum-regulating roll having a flat surface on its periphery,extending in the direction of the length of the roll, and intermediatethe ends thereof, said ends being of circular shape, and of the fulldiameter of the roll, substantially as shown and described.

2. In gum ming mechanism, the combination with the gum-box roll, of agum-regulating roll having its ends of uniform circular shape to engagethe gum-box roll throughout the complete rotation of both rolls, andhaving` its periphery intermediate said ends recessed in the directionof its length, tol form a flat surface which will not be in engagementwith the gum-box roll during the revolution of said rolls, substantiallyas shown and described.

3. In gumming mechanism, the combination with the gum-box roll, and thegum-regulating roll having circular ends of uniform diameter, and havinga flat surface on its periphery intermediate its ends and means forrotating said rolls, of means for moving the gumregulating roll towardand away from the gum-box roll, and for regulating the distances betweensaid rolls, substantially as shown and described.

4f. In gumming mechanism, the combination with the gum-box roll, and thegum-regulating roll having a flat surface on its periphery intermediateits ends, and means for rotating said rolls, of'means for moving 'thegum-regulating roll toward and away from the gumboX roll, and forregulating the distances between said rolls, said means consisting ofeccentric bearings for the gum-regulating roll, and means for adjustingsaid bearings and holding them in their adjusted position, substantiallyas shown and described.

5. In gumming mechanism, the combination with the gum-box roll, and thegum-regulating roll having a iiat surface on its periphery, of gearingintermediate said rolls to regulate the time of rotation of thegum-regulating roll, so that the `fiat surface thereon will becontiguous to the surface of the gum-regulating roll at the proper time,relative to the engagement of said gum-box roll by the gummers,substantially as shown and described.

EZRA P. WATERHOUSE.

Witnesses:

J. C. DEWEY, M. HAAs.

